Internal Combustion Piston Engines TRIZ Cases

Rotating exhaust gas flow mixes liquid reducing agents, resolving uniform distribution challenges in internal combustion engines.

Relocating the filter upstream of the pump prevents particle detachment during sucking-back mode, eliminating valve wear while maintaining dosing reliability.

Post-stop heating of the insulating member oxidizes conductive PM deposits, preventing short circuits between the heating element and case.

A vehicular urea pump module integrates a cylindrical PTC heater and protective plates to prevent permeation into electrical components.

An integrated branch communication and wastegate valve reduces backpressure and pumping work while simplifying engine control complexity.

An overpressure line with a self-controlling pressure valve in the turbine housing eliminates safety margins, reducing weight and improving response behavior.

Dual valve sections driven by a piezo actuator overcome limited stroke length while maintaining precise mass flow control.

Oil jets spray lubricating oil onto the stator while a coolant jacket dissipates heat from the turbine end of an electrically controlled turbocharger.

An adjustable venturi section modifies throat diameter to maintain adequate vacuum pressure during low engine speeds, preventing premature air filter clogging.

A two-stage voltage clamp circuit manages energy dissipation in ignition control systems.

Ceramic fiber coated with thermoelectric material wound into a ring resists failure from alternating thermal voltages.

Refractory solid oxide and platinum group metals form a barrier layer that stops varnish accumulation on EGR cooler surfaces, reducing NOx emissions.

A reductant dosing system purge valve directs pressurized fluid to clear passages while blocking entry into the storage tank.

A switchable trim compressor adjusts inlet diameter to optimize airflow rates across varying engine operating conditions.

Nesting a catalyst body within an annular heat exchanger directs exhaust radially, resolving space constraints while maintaining high thermal efficiency.

Positioning a single-layer bead seal at the dosing module center of mass minimizes leverage forces, preventing AdBlue leakage through manufacturing tolerances.

Radially extending attaching member increases assembly weight to suppress axial shaft vibrations caused by exhaust pulsation.

Alternating hot and cool side segments in the frame enable direct mounting on exhaust tubes, resolving flat surface limitations.

Radial thickness variation in an asymmetric flange distributes thermal loads, preventing tears and ensuring sustained operation.

Holes at the exhaust tube end direct gas flow around a concentric coolant passage inner shell, preventing SO3 condensation and sulfuric acid corrosion.

Asymmetric flange geometry directs exhaust gas flow into rotational gaps, resolving low power inefficiencies caused by uneven distribution.

Elastomer plug isolates corrosive fluid from weld zone, maintaining reliability in urea and ethanol environments.

Convex curved upper walls in air intake distributors smooth flow paths to reduce disturbances and improve cylinder flow homogeneity.

Composite oxide support stabilizes precious metals in exhaust gas-purifying catalysts through oxygen vacancies and controlled valence changes.

Segmenting exhaust paths via sleeve ports reduces thermal stress on valves while reintroducing hot gases improves low-load starting reliability.

Dynamic oxygen threshold calculation limits hydrocarbon slip to prevent diesel particulate filter overheating during regeneration.

Bottom-mounted timing gears in a vertical supercharger use specialized bearing seals and springs to counteract axial loads, preventing premature wear.

Thermal decoupling devices reduce heat conduction from the hot interior of a catalytic converter, protecting insulation layers from excessive thermal stress.

Welded lid members enclose oblique flow channel pipe ends within a cylindrical shell to eliminate peripheral interference and heat damage.

Shared hydraulic pressure synchronizes liquid and gaseous needle checks in a dual fuel injector, stabilizing timing against variable rail pressures.

A container partition divides the volume into proximal and distal regions to isolate heating near the device.

An electric fuel pump warms fuel via viscous heating to ensure reliable start-up at low engine speeds.

Orienting dendrites within 20 degrees of the axial perpendicular enables uniform plastic deformation during turbocharger nozzle vane assembly.

A mixed-flow turbine uses bevel gears to drive guide vanes, enabling precise airflow control within a compact engine assembly.

Segmenting exhaust streams allows the burner to compensate for engine lambda deviations, preventing pollutant release during non-stoichiometric operations.

A tri-axis connector splits diesel exhaust fluid into two equal portions for simultaneous delivery to dual injectors in selective catalytic reduction systems.

Bypass line routes heated air from the charge air cooler to prevent snow and ice clogging in the filter insert.

Positioning a velocity turbine between rotary units captures kinetic energy while minimizing back pressure on the engines.

A spiral-shaped piston bowl creates circumferential swirling air motion to enhance fuel-air mixing in opposed-piston engines.

Metering explosible powder into oxidizing gas via positive displacement creates a stationary deflagrating wave for clean, efficient combustion.

A charge air cooler with control means varies the filling volume to adjust resonance frequency.

Specific palladium and rhodium loadings on ceramic supports boost exhaust gas conversion efficiency while reducing precious metal usage.

Segmenting the mixer housing into two overlapping parts resolves manufacturing complexity while maintaining structural stability.

A dedicated mixing space combines urea with pressurized gas before the turbocharger turbine.

A pressure-actuated metering valve controls urea injection in SCR systems without external electronic signals.

A fuel mixture diffuser tab directs spray toward the ignition source to create a favorable local air-fuel blend.

Optimized valve spacing and sleeve gaps prevent uneven wear on the exhaust valve seat by ensuring uniform combustion gas flow.

Vertical inline scrubber with nested dual water sections removes sulfur from marine flue gas while minimizing space and chemical usage.

A fuel separation system uses a heat exchanger to split streams by auto-ignition characteristics.